there are probably early, rough around the edges versions of this already that aren't good enough to go mainstream.
A few things might need to happen before that, like shinking the resolution of Quest 3 down into form factor like regular glasses, so you could wear them in public without looking weird.
It'll be a bit like Smartphones. The first "handheld computers"/smartphones were not that great, then along came the iPhone.
I'm looking forward to seeing people "ghost type" on the train while typing out their messages to their assistant.